/*
 * Copyright (C) 2022 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import emitter from '@ohos.events.emitter';
import process from '@ohos.process';

export class Logger {
  static serverEventId = process.pid;
  static clientEventId = process.pid + 1;
  private static instance: Logger;
  private constructor() {
  }

  static getInstance() {
    if (!this.instance) {
      this.instance = new Logger();
    }
    return this.instance;
  };

  debug(eventId, args) {
    this.emit(eventId, "debug", args)
  }

  warn(eventId, args) {
    this.emit(eventId, "warn", args)
  }

  info(eventId, args) {
    this.emit(eventId, "info", args)
  }

  error(eventId, args) {
    this.emit(eventId, "error", args)
  }

  private emit(eventId, level, message) {
    emitter.emit(
      { eventId: eventId },
      { data: { level: level, message: message } }
    );
  }

  emitterOn(event: emitter.InnerEvent, callback): void {
    emitter.on(event, callback)
  }
}
